Safian, Shelly C., author
Delmar, Cengage Learning, 2009
Buku Teks
edited by J. Timothy Harrington and Eric D. Newman
Springer, 2012
eBooks
Harrison, Carlene, author
Delmar Cengage Learning, 2013
Buku Teks
Lighter, Donald, author
Jones and Bartlett Publishers,, 2011
Buku Teks
edited by Stephen J. Williams
John Wiley & Sons, 1980
Buku Teks